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A typical electromagnetic signal from a communications satellite might have an intensity of 0.600 pW/m2 at the surface of the Earth. Your satellite dish collects the energy of the electromagnetic signal from the satellite; then your dish passes that energy to its central receiver, where the signal can be processed by a circuit. The area of a satellite dish can be calculated from pi (3.1416) times the radius squared. If your satellite dish has a radius of 0.28 m, and if it is receiving the signal described above, how much electromagnetic energy is reflected to the central receiver in 2.5 minutes

User Gimpy
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1 Answer

3 votes

Answer:

The answer is "22.05 pJ"

Step-by-step explanation:

Using formula:


Energy=power* time\\\\Power=Intensity * area

Calculating Energy:


=0.147 * 2.5 * 60 * 10^(-12)\\\\=22.05\ pJ

User Jacek Rojek
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